NEET Biology question
According to Watson-Crick model, DNA exists as a ...A... . The two strands of polynucleotides are ...B... . The backbone is formed by the sugar...C..., ...D... chain. The nitrogen bases are more or less ...E... to this backbone. Choose the correct options for the blanks A, B, C, D and E
Answer: (C)
Solution
In the Watson-Crick model, DNA is a double helix (A) composed of two antiparallel polynucleotide strands (B, running in opposite 5'→3' directions); the backbone of each strand is built by alternating
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